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Testing of Friction Modified Crankcase Oils for Improved Fuel Economy
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English
Abstract
The use of friction modifiers in fully formulated petroleum based motor oils for the purpose of increasing fuel efficiency in spark ignited engines has been investigated.
Stationary engine test procedures were developed and used as a primary means for evaluating fuel economy potential of automotive oils. Fuel economy improvements with graphite-containing engine oils were greater in cyclic operation than in steady state operation. Vehicle dynamometer and controlled road tests with such engine oils also demonstrated improvements in fuel economy. Reduced viscosity was found to have a positive effect on fuel economy. Conventional oil components such as viscosity index improvers showed evidence for providing nominal differences in fuel economy. Substantial improvements in fuel economy were realized using dispersions of solid particles while retaining comparable viscosity characteristics for the oil.
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Citation
Broman, V., DeJovine, J., DeVries, D., and Keller, G., "Testing of Friction Modified Crankcase Oils for Improved Fuel Economy," SAE Technical Paper 780597, 1978, https://doi.org/10.4271/780597.Also In
References
- Chamberlin W. B. Sheahan T. J. “Automotive Fuel Savings Through Selected Lubricants,” SAE Paper 750377 February 1975
- Bennington J. E. Cole D. E. Ghirla P. J. Smith R. K. “Stable Colloid Additives for Engine Oils--Potential Improvement in Fuel Economy,” SAE Paper 750677 June 1975
- DeJovine J. DeVries D. L. Keller G. H. “Consumer Fleet Testing of Friction Modified Motor Oils for Fuel Economy Benefits,” NPRA Meeting San Antonio, Texas March 1978